Automatic zeroing for a rolling mill position regulator



y 1967 I K. R. THOMPSON 3,330,142

AUTOMATIC ZERQING FOR A ROLLING MILL POSITION REGULATOR Filed June 1, 1965 56 Sheets-Sheet l I 9 MILL i? I SEQUENCE, mLL E 5 STAND I SELECTER sTANol 7 EFERENOE ROLL AND POSITION ZERO FEEDBACK CONTROL CORREC- TION mm I; iOENTRAL 3, ST 1 AND MILL 26 J STAND 2 1 c STANDZ REFERENCE N 5 ROLL ZERO AND POSITION FEEDBACK o CONTROL CORREC- E L TION T L J MILL- E STAND 2 mu. 23 MILL 21 J E a 5| STANDS NT 8TAND3 REFERENCE *7 ROLL ZERO A N D POSITION CORREC FEEDBACK l CONTROL MILL- 3 mu. mm. 28 8TAND4 24 j 8TAND4 V 5a RsFERENc+ ROLL AND POSITION ZERO FEEDBACK CONTROL CORREC- I TION L MILL- STAND 4 FIG I INVENTOR:

KENNETH RTHOMPBON ATTORNEY July 11, 1967 Filed June 1, 1965 K. R. THOMPSON AUTOMATIC ZEROING FOR A ROLLING MILL POSITION REGULATOR 56 Sheets-Sheet 2 AMPLIFIER AND NOT INVERTER INVERTING OR 0 AND mv 0 NOT 0- 0R 0- FIG.2A F|G.2B FIG.2C FIG.2D

ONE SHOT OR CIRCUIT TIME DELAY COIL .-1 U OR ONEBHOT -O r n FIG.2E F|G.2F H626 FIG' H RELAY COUNTER RESISTER CONTACTS RELAY CONTACTS SET III 1 -1+- .,e

8 FIG.2I F|G.2J FIG.2K LB] P FIG.2L

EXCLUSIVE SHIFT OR REGISTER B'NARY INPUT ADDER X Q I INPUT STI as "1'1 OR IN cIJ o CARRY ADD TO R8T FIG2N REL YFLIPFLOP FIGZO FIG.2M A N 921 HDLD RFF FIG.2P

Jul 11, 1967 K. R. THOMPSON 3,330,142

AUTOMATIC ZEROING FOR A ROLLING MILL POSITION REGULATOR Filed June 1, 1965 36 Sheets-Sheet 5 I IN F Y R ST! SET 1' s R E u sR PUP o L PUL 0 9 sro nsrg 310 R81 1 'u' PG Hf J1 I I 2oKc I33U8 l 5 nvw w Fl 6.3 A

I88 (FIG.5-I90) I I90(FlG.4-I88) F FIG. FIG. FIG. FIG.

3A 3B 30 30 F/G.3

July 11, 1967 K. R. THOMPSON AUTOMATIC ZEROING FOR A ROLLING MILL POSITION REGULATOR Filed June 1, 1965 SIGNAL CONTROL GEIQIERATOR 56 Sheets-Sheet 4 FIG.3B

I73 4 TRO 74 STRO 0 K P July 11, 1967 THOMPSON 3,330,142

AUTOMATIC ZEROING FOR A ROLLING MILL POSITION REGULATOR Filed June 1, 1965 56 Sheets-Sheet 5 RB (FIQG) FIG.3C 2? us July 11, 1967 K. R THOMPSON AUTOMATIC ZEROING FOR A ROLLING MILL POSITION REGULATOR Filed June 1, 1965 56 Sheets-Sheet 6 FIG.3D

LTO

I33 15 M QIQ F AND J '6'; N NOT IF (FIG.6)

July 11, 1967 R. THOMPSON 3,330,142

. AUTOMATIC ZEROING FOR A ROLLING MILL POSITION REGULATOR Filed J 1955 56 Sheets-Sheet '7 I: L 2 o (5 LL I I FIG.4C

I4.4TRO

I5 5TRO I6 .6TRO

I7 7TRO July 11, 1967 FIG.4A

K. R. THOMPSON AUTOMATIC ZEROING FOR A ROLLING MILL POSITION REGULATOR Filed June 1, 1965 4.PHO

56 Sheets-Sheet E July 11, 1967 THOMPSON 3,330,142

I AUTOMATIC ZBROING FOR A ROLLING MILL POSITION REGULATOR Filed June 1, 1965 36 Sheets-Sheet 9 D V 0 1 Q5 8.AVO

9. OTXO n IO.AKO

ILITRO I2.2TRO

July 11, 1967 K. R. THOMPSON AUTOMATIC ZEROING FOR A ROLLING MILL POSITION REGULATOR Filed June 1, 1965 if I 46l U PULSR o 3-[2 8T0 R8T 88 BLO X 1' 8L0 F 32 L K as BKO 8M0 BMO 8m 99 2 0| J FIG.5C

FIG. FIG. FIG.

FIG.5

:56 Sheets-Sheet l0 July 11, 1967 K. R. THOMPSON 3,330,142

. AUTOMATIC ZEROING FOR A' ROLLING MILL POSITION REGULATOR Filed June 1, 1965 56 Sheets-Sheet ll (Has-ale) 55" J N F m |a2 R ITT L PUSET I K REV. r pubrR' cTR. RST I s 4 July 11, 1967 K. R. THOMPSON 3,330,142

AUTOMATIC ZEROING FOR A ROLLING MILL POSITION REGULATOR Filed June 1, 1965 56 Sheets-Sherri 12 M ILLSTAND SEQUENCE SELECTOR CTR L -OAND uan AND L U N NOT 207 0 AND NOT;

AND Y NOT gla FIG.5B

July 11, 1967 R THOMPSON 3,330,142

AUTOMATIC ZEROING FOR A ROLLING MILL POSITION REGULATOR Filed June 1, 1965 56 Sheets-Sheet 1:5

FIG.6G

3.7-8 7 IF I 67-823) (F I 6.7824) (F I 0.7-825) (FIGJ-BZB) (F 2 FIG.6

FIG. FIG. FIG. FIG. FIG.

6A 68 6E 60 6D FIG. FIG. FIG. FIG. FIG.

6H 6! 6d 6F 66 July 11, 1967 K- R. THOMPSON 3,330,142

AUTOMATIC ZEROING FOR A ROLLING MILL POSITION REGULATOR Filed June 1, 1965 .36 Sheets-Sheet 3.4.

REFERENCE DATA BUFFER8 s r ss r PU I I A7 5R 0 F E are RSTd mv. O JM H OFFSET 225 2 3 27 227.4 Y an s U UL I fl L! J H STO RST FIG.6A mv. X T

27g 272 F E 7 MW. 3

1 33 J -E FEED 2 s1: SET aAcKlf SR '1. MW. E 255 PO "3 [Es/H OR M 7 STORT V b M H F AND L N NOT C INV 262$ U zERolNe K x (FIG.7- B39) JE Y OR-X 237 L NV 7 I AU July 11, 1967 THOMPSON 3,330,142

AUTOMATIC ZEROING FOR A ROLLING MILL POSITION REGULATOR Filed June 1, 1965 56 heets-Sheet 15 FIG. 6B

REFERENCE s a; w

B so J C BA C E 00 O i 255 FEEDBACK 274 ADDER M r F s P c AND L H A w N B B A 80 D'E NOT J c 0 '60 Q- L F 76 I AND E 25' NOT K AND P NOT AND w Y NOT I y 1967 K. R. THOMPSON 3,330,142

AUTOMATIC ZEROING FOR A ROLLING MILL POSITION REGULATOR Filed June 1, 1965 56 Sheets-Sheet 16 y 1967 K. R. THOMPSON 3,330,142

- AUTOMATIC ZEROING FOR A ROLLING MILL POSITION REGULATOR Filed June 1, 1965 56 Sheets-Sheet l7 434 I U as? 515 |2| & g

v NOT (FlG.7-50l) 3l6 (FIG.5 487) AND Y NOT 537 AND Y NOT (Flor-50a) 52 s -|av x 523s F NV, 333

AND OR 5 5 33 Y NOT AND L f N NOT July 11, 1967 Filed June 1, 1965 K. R. THOMPSON AUTOMATIC ZEROING FOR A ROLL ING MILL POSITION REGULATOR 36 SheetsShe5-t l6 FIG. 65

+6 F IF l H on E R STI SET J IE N F FPUR UL 279 TI sE T K STORST J IE .M |25I H L R p STORST.

INV. 0T-|MH 267 2 Y IR "sa P SR OH "265 x T x INV.

y 1967 K. R. THOMPSON 3,330,142

AUTOMATIC ZEROING FOR A ROLLING MILL POSITION REGULATOR Filed June 1 1965 36 Sheets-Sheet l9 ERROR BUFFER STI (BIG 8" (FIG.7-82 0) (FlG.7-82l) (FIST-822) ANTICIPATION LOGIC AND ERO (A5) NOT N OR

FIG.6F

July 11, 1967 K. R. THOMPSON 3,330,142

. AUTOMATIC ZEROING FOR A ROLLING MILL POSITION REGULATOR Filed June 1, 1965 56 Sheets-Sheet 2O W x INV.

(FIGS) 

1. IN A POSITIN REGULATING SYSTEM FOR POSITIONING A PAIR OF COACTING ROLLS IN A ROLLING MILL ACCORDING TO THE DIFFERENCE BETWEEN THE ACTUAL AND DESIRED SEPARATING DISTANCE BETWEEN SAID PAIR OF COACTING ROLLS, MEANS FOR INDICATING THE INDICATED SEPARATING DISTANCE BETWEEN SAID PAIR OF COACTING ROLLS, MEANS FOR INDICATING THE ZERO CORRECTION FACTOR FOR SAID INDICATING MEANS, MEANS FOR COMPARING SAID INDICATED SEPARATING DISTANCE AND SAID ZERO CORRECTION FACTOR, AND MEANS RESPONSIVE TO SAID COMPARING MEANS FOR INCREASING THE RANGE OF SAID INDICATED SEPARATING DISTANCE BY A PREDETERMINED VALUE WHEN SAID INDICATED SEPARATING DISTANCE IS LESS THAN SAID ZERO CORRECTION FACTOR. 